Times group Interview questions: Method overloading/overriding

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is it overloading? will it compile, if not then why ?
  public void show(String a){
    //.....
    //...
  }


   public int show(String a){
    //.....
    //...
   }

 Solution: It is not mothod overloading as argument list must be different. It will not compile and compiler will give duplicate method error.

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